hintz



(No Model.)

2 Sheets-Sheet 1. J. G. HINTZ, Jr. BOLTING MACHINE Patented Jan. 18,1898.

(No Model.) 2 Shgets-8heet 2.

' J. G. HINTZ, Jr.

BOLTING MACHINE Patented Jan. 18, 1898.

NITED STATES Y arena reins.

JOHN G. I'IINTZ, JR., OF MILWAUKEE, WISCONSIN, ASSIGNOR, BY DIRECT ANDMESNE ASSIGNMENTS, TO THE EDWARD P. ALLIS COMPANY, OF

SAME PLACE. I

BOLTlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 597,412, dated January18, 1898.

A plication fil d October 81, 1894. Renewed June 8, 1897. $erial No.689,910. (No model.)

, reference marked thereon, which form a part of this specification.

The main object of myinvention is to provide a machine of large capacityand capable of a variety of sifting operations within a small compass.

It consists, essentially, of a gyrating case provided with a series ofsubstantially horizontal sieves arranged one below another in a spiralseries, the tail of each sieve being open and projecting over the headend, which is closed, of the next succeeding sieve of the series, and ofcertain novel features in the construction and arrangement of thecomponent parts of the machine, as hereinafter particularly described,and pointed out in the claims.

In the accompanying drawings like letters designate the same parts inthe several figures.

Figure 1 is a horizontal section of a machine embodying my invention ina plane indicated by the dotted line 1 1, Fig. 2. Fig. 2 is a verticalsection in a plane indicated by the dotted line 2 2, Fig. 1; and Fig. 3is a partial vertical section on the line 3 3, Fig. 2, and sideelevation of the machine.

A designates the frame,whieh is of any suitable shape and material, tosupport the moving parts of the machine.

13 is a casing of circular form in horizontal section, and suspended, asshown in Fig. 2, by hangers I) b from frame A, so as to permit of agyrating or circular movement of said case around its vertical axis. Thehangersh b have ball-and-socket or universal-joint connections with saidframe and case and are provided with adjusting-nuts b b for leveling thecase. The shaft 0 extends axially through the case, projeoting'therefromat either end. Above and below the case are crank or fly wheels D andD", mounted on vertical shafts in line with each other and engaging theends of shaft G, which serve as crank-pins. wheel is provided with abevel-gear d, which meshes with a similar gear or pinion c on ahorizontal driving-shaft E. Through these connections a gyratingmovement is imparted to the case or sieve-frame B, the lower flywheel Dserving to guide it at the bottom and to insure a like and steadymovement at both top and bottom.

F F are sector-shaped sieves arranged in a spiral series within the case13 around a central post or column 5 the tail end of each sieveprojecting over the head end of the next succeeding sieve, so as todischarge its tailin gs thereon, the several sieves being arranged inparallel horizontal planes.

The number and arrangement of the sieves and the feeding and dischargingconnections may be changed so as to perform any one or number of a greatvariety of sifting opera 'tions in the same machine.

For the purpose of illustration I have shown a machine in which thesieves and feeding and discharging connections are arranged to operatesimultaneously upon two breaks and to grade the siftings of both breaks.this purpose a closed bottom is provided, composed of sections G G, likeor similar in shape and arrangement to the sieves, or made in the formof a continuous spiral.

H and H are the feed connections, which in this instance consist offlexible tubes secured at their lower ends in openings in the top of thesieve-case. The first opens upon the upper sieve of the first series,and the second into a pocket h, which opens at 3}, Fig. 2, upon thesieve next directly below the first sieve of the series.

I I designate lateral discharge-spouts for the tailin gs of the firstand second breaks, respectively, and J J are discharge connections, inthis instance consisting of flexible tubes secured at their upper endsin openings in the bottom of the sieve-case. The first is for thetailings of the sittings of the first and second breaks and the secondfor the siftings of the siftings of both breaks. The sittings of thefirst break are deposited upon the sec- The shaft (Z of the upper crank-For 0nd series of sieves at y, Fig. 2, and are, mingled with thesittings of the second break.

It is obvious that either the tailings or the siftings may beintercepted by radiating partitions, such as 2' t', and dischargedthrough lateral openings, such as I I, in the case at any desired pointor points in the series of sieves or closed bottom sections.

To afford ready and easy access to the interior of the machine and thesieves, the sides of the case are formed in doors or removable panels Z)12 which are engaged at the edges and held in place by buttons b b, asshown in Figs. 1 and 3, or by other suitable fastenings.

To prevent the escape of material from the outer edges of the sieves andbottom sections when the sides of the case are removed, said sieves andbottom sections are provided on their outer edges with guards ff.

To keep the wire or cloth of the sieves open and clear, I provide chainsK K, which are attached at the ends to the inner and outer sides of thesieves near their tail ends and are attached at an intermediate point toor near the head ends of the sieves, so asto lie loosely upon and sweepfreely over their upper surfaces, as shown in Fig. 1.

By means of the form of the casing and the arrangement of the sievestherein in connection with means of imparting a gyrating movement I amenabled not only to perform in one machine various bolting operationssimultaneously, but also to constantly utilize the entire area of thesieves and thus economize space, it being practicable, according to myplan, to construct a machine of large ca pacity that will occupy acomparatively small floor-space by extending its vertical dimensions.

As hereinbefore stated, the number, shape, size, and arrangement ofsieves, as well as of the closed bottom sections, and the number andarrangement of the feed and discharge connections and other details ofthe machine may be variously changed, according to the kind and amountof work to be done, and I do not wish to be understood as limitingmyself to the specific construction and arrangement of the componentparts of the machine herein shown and described, nor to the operation ofthe machine on any particular kind of material.

While these features admit of variation, as indicated, I find it ofadvantage to give to the outer boundaries of the sieves a continuouscurve, or to avoid any well-defined angles or pockets in which the stockor its component parts might lodge. The circular path in which thecasing moves causes the stock to travel in a substantially cylindricalpath, the effect being closely similar to that of handsifting, while thetail of each sieve projecting over and resting upon the head of the nextprecludes a backward movement of the stock at each of said points andcauses the material 'to be thrown forward more effectively than it wouldbe were a smooth or continuous spiral sieve employed without these stepsor upright faces. It is found that in actual operation the upright facesthus formed serve to shake up and loosen the stock and to cause thoseparticles which might otherwise remain as a distinct layer on the top ofthe mass to find their way to the surface of the sieve itself .and ingreat part to pass through its meshes.

By this construction I avoid the use of pocketed ribs, bars, or walls,such as have been proposed, and I obviate the difficulty attending theuse of such pocketsthe accumulation and lodging of material in them.

Rectangular sieves do not give the same efficient action as the circularsieve for the reason that the material tends to work into and to remainin their corners or angles, becoming in time musty and liable at anymoment to be loosened and to move forward in a compact mass, thusinterfering with the proper action of the sieves and in some casesmixing old and musty stock with the fresh stock under treatment. Thecylindrical form produces a continuous smooth outer wall of easy curve,preventing any lodging of the stock.

It will be observed that while there is a bodily movement of the casingwith its sieves and carrier-boards in a circular path there is norotation of the casing about its axis. A mere rotation or oscillationabout a point within the sieve boundaries will not produce the actionrequired.

Each sieve or section being wholly unobstructed at the tail and being aswide at that point as the head of the next succeeding sieve, thetailings from one are delivered in a thin sheet to the next across itsentire width, thus avoiding the massing or banking up of the material atone point, as is the case where the material is tailed off from onesieve to another through a spout. In such latter case the discharge isobstructed and slow and the feed to the succeeding sieve is concentratedat one point, requiring considerable time to effect a distribution overthe sieve and precluding complete utilization of the sieve-surface.

The sieves being each provided with a guard or raised outer wall, it ispracticable to remove the doors or sections of the casing ex tendingfrom top to bottom and to take out any sieveor sieves Without causing orpermitting the stock to escape at the outer edges of the sieves, atwhich point there is generally a somewhat heavier layer than elsewhere.

I claim 1. In a sifting-machine, the combination of a suitable case;substantially horizontal sieves arranged therein in a spiral series,each sieve having a raised wall or abutment across its head, and havingits tail or delivery end unobstructed, the tail of each sieve beingarranged above the head of the next and to deliver its tailings acrossthe entire width thereof; and means substantially such as shown forimparting a horizontal motion to the easing in a circular path, withoutrotation about its own axis.

2. In a bolt-ing machine, the combination of a cylindrical casing; anumber of substantially sector-shaped sieves having their framesoverlapping and resting one upon another, whereby the tail of each ismade to serve as an upright wall or abutment for the head of the next;and means substantially as described and shown for imparting ahorizontal movement to the casing in a circular path, without rotationabout its own axis.

3. In a bolting-machine, the combination of a cylindrical case and anumber of substantially horizontal sector shaped sieves arranged thereinin a spiral series, the tail ends of the upper sieves being open andeach projecting over the head end which is closed of the next succeedingsieve, and means of imparting a gyrating movement to the sieves,substantially as and for the purposes set forth.

4. In a boltingmachine, the combination of a casing provided with one ormore discharge-openings means for imparting to said casing a horizontalmovement in a circular path; a number of substantially horizontal sievesarranged within said casing in a spiral series, the tail of each restingupon the head of the next below and delivering its tailings across thewidth of the lower sieve; and one or more cut-offs or partitionsextending across the sieves opposite the discharge-openings,substantially as and for the purpose set forth.

5. In a bolting-machine, the combination of a case provided with lateraldischarge-openings; a number of substantially horizontal sieves inclosedtherein and arranged in a spiral series, the tail. of one forming anabutment over which the tailings fall to the head of another; a closedbottom extending beneath a portion or all of said sieves in spiral form;cut-offs or partitions extending across the sieves and across the bottomopposite their respective discharge-openings in the case; and means forimparting a circularhorizontal movement to the case.

6. In a bolting-machine, the combination of a cylindrical casingprovided with a central post and with lateral discharge-openings anumber of substantially horizontal removable sieves arranged in spiralseries about said post and extending outwardly therefrom to the casing;a closed bottom extending in spiral form beneath the sieves; cut-cits orpartitions extending across the sieves and across the bottom oppositetheir respective discharge-openings; and means substantially such asdescribed and shown for imparting horizontal motion to the casing in acircular path.

7. In a bolting-machine, the combination of a casing provided with acentral post or column; sieves extending horizontally from said post tothe outer walls of the casing, and arranged in a descending spiralseries, with the tail of each extending across and forming an uprightwall for the head of the next sieve below; and means substantially asdescribed for imparting a horizontal movement to the casin g in acircular path.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

JOHN G. HINTZ, JR.

\Vitnesses:

OHAs. L. Goss, F. WV. KELLY.

